EGR Position Sensor Rationality Closed *

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Trouble Ticket Help Requests for DTC P1404

Help Request

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2005 Chevrolet Silverado 2500 HD 6.6L StallVIN: 1GCHK23295P1404: EGR Valve Closed Position Performance. Cleared codes, only one that comes back is 642. Truck will
start, run fine then start running rough and stall.
Sometimes will restart right away. Not a diesel guy. Anyone
seen this before? Thanks

2005 Chevrolet Silverado 2500 HD 6.6L StallVIN: 1GCHK23295P1404: EGR Valve Closed Position Performance. Cleared codes, only one that comes back is 642. Truck will
start, run fine then start running rough and stall.
Sometimes will restart right away. Not a diesel guy. Anyone
seen this before? Thanks